import sys
file = sys.stdout
# file.write('hello')
#
# print("helloworld!")

file = open('test.txt','rb')
print(file.read(1))
print(file.read(1))
print(file.tell())
print(file.seek(0))

# #不需要 写close
# with open('test.txt','r',encoding='utf-8') as file2:
#    list2 = file2.readlines()
#    print(list2)
#
# str = "day day up"
# with open('test.txt','w',encoding='utf-8') as file3:
#     file3.write(str)
#
# List3 = ['hello11','world22']
# with open('test.txt','a',encoding='utf-8') as file4:
#     file4.writelines(List3)